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Measurements and Instrumentation - Engineering

Q1:

If reference sound pressure P0 is 2 x 10-5 N/m2, a sound pressure of 90 dB is equal to

A 0.632 N/m2

B 0.707 N/m2

C 0.835 N/m2

D 0.925 N/m2

ANS:A - 0.632 N/m2

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